Register in the Cl@ve system online with CSV following request for invitation letter.

  • To be able to log in with a Cl@ve PIN in the procedures that admit it as an identification system, you will need to have previously registered for Cl@ve.If you do not have an electronic certificate, you can register online by requesting an invitation letter. This letter will be posted to your tax address. You then need to complete registration using the Secure Verification Code (CSV) included in your letter.

    Here you will find all the information on the registration process, detailing each of the steps you need to take.

    Requesting an invitation letter and registering in Cl@ve with CSV

    Toregister in the Cl@ve system, access the option "Register in Cl@ve" on the portal "Cl@ve Registration".

    Register for Cl@ve PIN

    Start the registration process by indicating your DNI/NIE

    • DNI:8 numbers and a letter (without spaces or hyphens)
    • NIE:Letter 7 numbers and a letter (without spaces or hyphens)

    DNI / NIE

    Depending on the document number indicated, you will then need to enter additional information:

    • If it is a DNI:Indicate the validity or issuance date.In the case of a permanent DNI (with period of validity 01/01/9999), the data requested is the issue date.At the bottom you have two help points, explaining where to find the validity/issuance date on different kinds of DNI.


    • If it is a NIE: you will be asked for the support number that appears on your document.You can see the help links “How to find the support number...”, explaining where to find this information on your foreigner card, residence permit or EU citizen certificate, and how to fill it in correctly on the registration form.For more information on the support number, you can also consult the help point ‘'Enter a valid support' (How to enter the support number)

    Support number

    When you click Continue’, the information entered will be validated.If everything is correct, the next window will inform you that you need to have an invitation letter to register in Cl@ve.To request that the letter be sent, click on the button "Yes, send me a letter of invitation to my financial address"

    Request the letter

    If the application is recorded correctly, a message will appear confirming the dispatch of the invitation letter to the tax domicile that is currently registered in our databases.Click on the button 'Accept'

    Confirmation of the sending of the invitation letter

    Once you have received the letter, you must complete the registration by accessing again the same option "Register in Cl@ve" of the portal "Cl@ve Registration" and providing the requested data:DNI / NIE and validity/issuance date or support number.Now check the option “I already have an invitation letter” and click on the button “Continue”.


    In the following step, enter your 16-character Secure Verification Code (CSV) included in your letter, and click 'Continue'.If you cannot find it, check the help point “How can I find the CSV in my invitation letter?”.from the bottom.


    Provide CSV of invitation letter

    The information requested in this final registration step in Cl@ve is the mobile telephone number where you want to receive the SMS sent by the Tax Agency with your PIN, and an email address.

    mobile phone and email address

    Important note:if the system detects that the mobile number entered is linked to another DNI/NIE, you will receive an SMS with an access code to complete your registration.There will be a section in the registration application for you to enter this code.Remember that registering in Cl@ve PIN will only allow one mobile number per user.In this case, access to the Cl@ve system for the previously associated DNI/NIE is automatically disabled.

    After accepting the conditions and clicking "Send", a screen appears with the activation code. Click on "View PDF" to obtain the registration slip in Cl@ve, which you can save and print.

    View PDF

    The document contains an activation code that allows you to activate the Permanent Cl@ve, as well as activation instructions and the terms and conditions for using the system.

    receipt of registration in the Cl@ve system

    For more information on the Permanent Cl@ve, consult the Cl@ve Portal.

    Identification with Cl@ve PIN

    After registration in the Cl@ve system, you can access this type of identification in the procedures that allow it.Enter your DNI/NIE and the data requested by the application.See the help "Obtaining a Cl@ve PIN"

    choose how to obtain the PIN

    Useful links:

    PIN24H PIN access key authentication advanced signature
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